Petro of Asturias de Santillana

Petro (Pedro) of Asturias de Santillana (660-720) was the Duke of Cantabria. He was the son of king Erwigio Erwigiana of the Visigoths and the father of Alfonso I of Asturias and Froyla of Asturias de Santillana.

Biography
Petro was the son of King Erwigio Erwigiana, a Christian Visigoth of the royal House of Erwigiana. Petro was the first scion of the House of de Cantabria, a Christian Visigothic bloodline that would become the rulers of the Kingdom of Asturias. He became the duke of Cantabria under the Visigothic kingdom due to his father's high rank in society.

In 714, when Musa ibn Nusair sacked the Cantabrian capital of Amaya, Petro led his people into the mountains. He supported Pelayo of Asturias in his rebellion against the Moors, and he supported his election as king. After the victory at the Battle of Covadonga, Petro sent his son to court at Cangas de Onis under King Pelayo, and he married his son Alfonso to Pelayo's daughter Ermesinda.